The Amazing Race has begun filming Season 31, and the identities of the teams who will be racing have reportedly leaked out.

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The Amazing Race host Phil Keoghan announced the new season's kickoff and also confirmed it will feature a mix of veteran Racers as well as former Survivor castaways and Big Brother houseguests.

"Another #AmazingRace season has begun! Get ready to see some familiar faces on Season 31!" The Amazing Race tweeted on Sunday.

The Amazing Race's official Twitter account also posted a video of Phil standing at the starting line in Hermosa Beach, CA.

"I wanted to let you in on a little secret. I am at the start of The Amazing Race 31, and for the first time ever, we have a reality clash between fierce competitors from three of your favorite shows -- Survivor, Big Brother and The Amazing Race," Phil announced.

"Trust me, this is going to be crazy time! I know it because I've met the contestants. They are excited!"

Phil added in the video: "This is a chance for us to finally prove the No. 1 show. No, I'm just kidding. It's going to be a good one. Please join me."

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According to Reality Fan Forum's message board, spoiler sleuths have determined the teams that will be competing on The Amazing Race next season.

Citing eyewitness accounts, sleuths have revealed The Amazing Race's Season 31 teams will be comprised of five former The Amazing Race teams, three teams of former Big Brother houseguests, and three teams of former Survivor castaways.

The sleuths also claim the teams are headed to Tokyo, Japan after meeting at the starting line.

TMZ and Us Weekly previously reported numerous reality TV stars expected to compete on Season 31 of The Amazing Race, but the participation of many of those people apparently fell through.
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For example, Josh Martinez and Paul Abrahamian are reportedly not racing for the $1 million grand prize, and neither are Tai Trang, Dan Gheesling, Jessie Godderz, Frank Eudy, Ian Terry, Da.Vonne Rogers, Bridgette Dunning, Caleb Reynolds, Corey Brooks, and James Huling.

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Below is the actual list of The Amazing Race teams for next season and their respective original shows, according to Reality Fan Forum:

The Amazing Race

- Becca Droz and Floyd Pierce (Season 29)

- Tyler Oakley and Korey Kuhl (Season 28)

- Leo Temory and Jamal Zadran (Season 23 and All-Stars)

- Art Velez and John James "JJ" Carrell (Season 20)

- Colin Guinn and Christie Woods (Season 5)

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Big Brother

- Rachel Reilly (Seasons 12 and 13) and Elissa Slater (Season 15)
             Rachel also competed on Seasons 20 and 24 of The Amazing Race

- Janelle Pierzina (Seasons 6, 7 and 14) and Britney Haynes (Seasons 12 and 14)

- Nicole Franzel (Seasons 16 and 18) and Victor Arroyo (Season 18)

Survivor

- Eliza Orlins (Survivor: Vanuatu -- Islands of Fire and Survivor: Micronesia -- Fans vs. Favorites) and Corrine Kaplan (Survivor: Gabon and Survivor: Caramoan -- Fans vs. Favorites)

- Rupert Boneham (Survivor: Pearl Islands, Survivor: All-Stars, Survivor: Heroes vs. Villains, and Survivor: Blood vs. Water) and Laura Boneham (Survivor: Blood vs. Water)

- Chris Hammons and Bret LaBelle (Survivor: Millennials vs. Gen X)